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Bayblock I (New name for Durashield II) is a technologically advanced acrylic-elastomer coating uniquely formulated for the protection of sprayed-in-place polyurethane foam insulation and other construction surfaces.

Bayblock I is formulated to adhere to Monolithic Dome Airforms, polyurethane foam, and a diversity of other substrates. If applied directly to the Airform is it recommended to use Monoform Primer.

It produces a seamless, flexible, durable membrane having exceptional weather-resistance ability, ultraviolet and fire resistance. Bayblock I acts as a “breathing” membrane allowing trapped moisture vapor to pass through the film while remaining impervious to exterior mass water penetration.

Bayblock I is available in standard Bright White, Tan, Gray and custom color matching is available upon request. Custom colors require an up-front $150 color matching fee plus a per-gallon fee. Call for exact costs.

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